Parking brake control valve button cover



FIG. 1 is a perspective view of a parking brake control valve button cover showing the new design;

FIG. 2 is a top view of the button cover of FIG. 1;

FIG. 3 is a side view of the button cover of FIG. 1;

FIG. 4 is a bottom view of the button cover of FIG. 1; and,

FIG. 5 is a perspective view of the button cover of FIG. 1 engaging a parking brake control valve button.

The broken lines shown in FIG. 5 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a parking brake control valve button cover, as shown and described. 